Refrigerating apparatus



fiune l7 1924. 1,498,122

E. RUMPLER ET AL REFRIGERATING APPARATUS Filed April 25, 1921 Jnuenzors;

Patented June '17, 1924.

mm: STATES. PAT-E EDMUND RUMPIIER, OF GOGGINGEN,' NEA AUGSIBURG, GERMANY; SAID REN NT OFFICE,

a Acesntmo, AND ALBERT n w, or NAU ASSIGNOR TO sen) numrnm nnrruennact'mo APPARATUS:

,Application filed April 25, 1921. Serial No. 164,488

certain new and useful Improvements in Refrigerating Apparatus, of which the following is a specification. i r This ini 'entionrelates to a novel absorption refrigerating apparatus specially designed for cooling a refrigerator, although it may also be used for cooling rooms, and

is principally'designed to produce an apparatus of this kind. which will properly and safely operate without attendance.

In the accompanying drawing we have represented an example of carrying our invention into effect.

The boiler is, which serves as gas-producer of the apparatus, contains the electric heating cartridge and a small steel tube a, which is preferably pivoted at f, as shown in the drawing, in order to be able to swing in a vertical plane, in such a manner that it will either'b'e positioned in the dotted or :in the position shown in full lines. The latter position willbe effected through the action of the electromagnet m or the like, which is inserted into the electric circuit to. serving for heatin the boiler 7:. The-ammonia-gas, which is iberated by heating the boiler It, will now flow unobstructed in the direction of theupper arrow through the conducting pipe 5 and will thus be carried into the condenser. c, where it will condense to a liquid by reason of the efiect of the cooling-water so that it will trickle through the container 8 into the evaporator o.

When the gas has been driven ofi,-the electric circuit is interrupted in any suitable way; For automatically opening the circuit, recourse may behad to a heat-responsive element such as a thermometer t controlling an electric circuit r'which in turn may be utilized in well-known manner for control-' lin the electric circuit to including the cartridge p and the electroina et When the circuit w is open then t e steel tube' a will swing downwardly and assume the position indicated in dotted line. As the boiler liquid cools off, a partial vacuum will b? formed causing the re-absorption of the ammonia from the evaporator v. The rocess of cooling ofthe. boiler liquid can I hasand ALBERT tened or promoted in any suitable manner as is well understood in the art.

The principal point of novelty of our invention is the arrangement including the tube a which, in the full line position, cargas during the process of evaporation in the I evaporator'to return to and be reabsorbed by the liquid in the boiler;

en the condensed or liquefied as has been fully evaporated and re-absorbe by the boiler liquid, the circuit w is again energized. The tube a is again lifted out of the liquid by the action of' the magnet m and the cycle is repeated. a

o By inserting a properly'constructed and boiler is and theevaporator o it will "further be possible to utilize this small apparatus for cooling rooms. The liquefied as has a comparatively low temperature an the pe; riod of distillation is comparativel so that no appreciable heat trans er will economically cooledcondenser 0 between the short take place, from the liquid in the accumu- I later or storage reservoir and the evaporator to the'air in the .room to be cooled. Moreover the air which may be warmed up remains at the top of the refrigerator where it can have little eifect.

Furthermore, the capacity of the eve 0- rator can be so dimensioned that the period of heating, which takes a comparatively short time, will be followed by a period of evaporation lasting several hours, and durin this latter eriod t'he cooling will be e ected by airtw ich-is a poor conductor of heat. A closure j which may be of the type of a so-called Venetian blind will close up the evaporator-from the room 1'. r

e accumulator a may also be so structed" that a container 6 may be placed into the same for ice-cream makin While we have s ecifically -re erred to electrical means for eating the boiler liqthat other heating the boiler 7: and this arrangement constipreferred embodimentof the in-' tutes the vention.

However,

in the broader aspect of the invention, the

tube a may be stationary relatively to the boiler .and the boiler together with the tube a may be 'angularly turned to at one'time cause the tube a to dip into the boiler liquid and at another time to open into the vapor space of the boiler.

Having thus described our invention we claim as new and desire to secure by Letters vessel containing a liquid adapted to absorlo a gas, a tube disposed in the vessel and extending to the outside, the tube being movable relatively tothe vessel and having a portion presenting an opening, and means for moving the tube portion to a position in which its free end is immersed in the liquid or to a position in "which it is dis posed above the level of the liquid.

3. A refrigerating apparatus comprising a vessel containing a liquid and adapted to alternately operate as a,boiler and as an absorber, a stationary evaporator, a fluid connection between the vessel and the eva orator, said connection including a tube isposed in the vessel, and means for changing the relative position of the liquid and the tube to either immerse the free end of the tube in the liquid or to dispose it above the level of the liquid.

4. A refrigerating apparatus comprising a vessel containing a liquid and adaptedto alternately operate as a boiler and as an absorber, an evaporator, a fluid connection between the vessel and the evaporator, said connection including a tube disposed in the vessel and angula-rly movable relative thereto, and means for'moving the tube to a position in which its free end is immersed in the liquid or to a position in which it is disposed above the level of the liquid.

5. A refrigerating apparatus-comprising a vessel containing a liquid and adapted to alternately operate as a boiler and as an absorber, a stationary evaporator, a fluid connection between the vessel and the evaporator, said connection including a tube disposed in the vessel, means for changing the 'relative position of the liquid and the tube to either immerse the free end of the tube in the liquid or to dispose it above the level of the liqu d, and means for applying heat to the l1qu1d during the period the tube is above the level of the liquid and shutting off the supply of heat when the tube is immersed.

6. Refrigerating apparatus of the absorption type, including a vessel'adapted to be partly filled with liquid and serve alternateelectric means for operatively connecting the vapor space or the body of liquid in said vessel with said conduit, both of said electric means being arranged in the same circuit for simultaneous operation, whereby said conduit communicates with the vapor space during heating operation, and with the bodyof liquid during intervening periods.

7. Refrigerating apparatus ofthe absorption type, including a vessel adapted to,be partly filled with liquid and serve alternate ly as an absorber and as a boiler, a gas conduit for delivering gas therefrom or thereto, and an oscillating member disposed entirely within said vessel for operatively connecting said conduit with the vapor space said vessel during useof the vessel as a. boiler and connecting it with the liquid space in said vessel during use of. said vessel as, an absorber and electric means for operating said'oscillating member.

8. Refrigerating apparatus of the absorption' type, including a vessel adapted to be partly filled'with liquid and serve alternate- 1y as an absorber and as a boiler, a gas conduit for delivering gas therefrom or thereto, and electric means for applying heat to the vessel, said conduit being automatically connected with the liquid space of the vessel.

upon the shutting ofl of the supply of heat.

9. A refrigerating apparatus comprising a vessel containing a liquid andadapted to alternately operate as a boiler and as an absorber, an evaporator, a fluid connection between the vessel and' the evaporator, said connection including a' tube. disposed in the vessel, electric means for changing the ,relative position of the liquid and the tube to either immerse the free end of the tube in the liquid or to dispose it above the level of the liquid, andelectric means for applying heat to the liquid during the period the tube is above'the level.

In testimony whereof we have aflixed ou signatures in presence of two subscribing witnesses,

DR. Inc. EDMUND RUMPLER. ALBERT RENNAU.

Witnesses HANS STIER, WILHELM GR BER. 

